media: Verify CDM Host files

content/public/common/content_client.h

Index: content/public/common/content_client.h
diff --git a/content/public/common/content_client.h b/content/public/common/content_client.h
index 1974ba031a4c2a35dc29329790423752c77854fb..b2823b4ad53291ee2c9b2e2bf84a70154eefa15e 100644
--- a/content/public/common/content_client.h
+++ b/content/public/common/content_client.h
@@ -45,6 +45,7 @@ class ContentGpuClient;
 class ContentRendererClient;
 class ContentUtilityClient;
 class OriginTrialPolicy;
+struct CdmHostFilePath;
 struct CdmInfo;
 struct PepperPluginInfo;
 
@@ -87,11 +88,16 @@ class CONTENT_EXPORT ContentClient {
   virtual void AddPepperPlugins(
       std::vector<content::PepperPluginInfo>* plugins) {}
 
-  // Gives the embedder a chance to register the content decryption
-  // modules it supports.
+  // Gives the embedder a chance to register the Content Decryption
+  // Modules (CDM) it supports.
   virtual void AddContentDecryptionModules(
       std::vector<content::CdmInfo>* cdms) {}
 
+  // Gives the embedder a chance to register Content Decryption Module (CDM)
+  // host file paths.
+  virtual void AddContentDecryptionModuleHostFilePaths(
+      std::vector<content::CdmHostFilePath>* cdm_host_file_paths) {}
+
   // Gives the embedder a chance to register its own schemes early in the
   // startup sequence.
   // For the secure schemes and origins that need to be considered trustworthy,